Car construction



J. MCMULLEN CAR CONSTRUCTION Filed May 9, 1927 naar [Inl/Ill IIIIIII Inf/mr JZ/zn gy l ,wmf

Aug. 20, 1929.

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Wdnaf Patented Aug. 20, 1929.

UNITED STATES PATENT OFFICE.

JOHN MCMULLEN, 0F BUFFALO, NEW YORK, ASSIGNOR TO W. H. MIVNER, INC., OF CHICAGO, ILLINOIS, A CORPORATION OF DELAWARE.

CAR CONSTRUCTION.

Application led May 9,

This invention relates to improvements in car construction.

In the operation of railroads, experience has shown the advisability of so connecting the body bolster with the parts of the truck of the car that they cannot separate vertically in the event of collision or deraihnent, since this effectually prevents or minimizes turning over or telescoping of the cars. In the case of six-wheel trucks, where the-center axle extends immediately beneath and closely adjacent to the center pin opening, it is practically impossible to apply the locking center pin from below.

One object of my invention is to provide in car construction a detachable king pin arrangement of an eiicient type for locking together the body andtruclrfbolsters of a car, and more specifically to provide a locking pin arrangement which may be detachably applied from the interior of the car above the truck and body bolster, and which includes a means whereby insertion of the pin in the center pin opening and a partial rotation thereof effects locking engagement between the parts, detachable means being provided which prevent rotation of the pin in a releasing direction. Y

Other objects of the invention will more clearly appear from the description and claims hereinafter following.

In the drawings, forming a part of this specification, Figure 1 is a vertical longitudinal sectional view ofa portion of a car construction, taken partially through the center bearing of the car and showing my' improvements in connection therewith. Figure 2 is a vertical transverse sectional view corresponding to the sectional line 2-2 of Figure 1; and'Figure 3 is a horizontal sectional view through the truck member and center pin taken substantially upon the line 3 3 of Figure 1. And Figure 4 is a top plan view of the locking arrangement.

In said drawings, center sills of a built-up construction are shown, each of the same comprising a vertical plate 10 and upper and lower angular members 11-11 secured to the outer side thereof. Preferably another angle member 12 is secured to each plate along the lower edge thereof on the inner side as shown. In the car construction shown, the body bolster preferably includes an upper tension plate 13, and a lower compression plate 14, and connecting webs 140.

1927- Serial N0. 189,781.

In carrying out my invention, I employ a :body bolster center-bearing casting designated generally by the reference character A. The latter is provided with a bot-tom portion 15 adapted to rest upon the inner angle members 12--12 as shown, and has vertical side flanges 16-16, which are riveted to the inner faces of the center sill plates 10. Said center casting is provided with a plurality of transversely extending webs 17-1.7, and centrally of said casting there is provided an upstanding boss 18, having aligned center pin openings which register with a corresponding opening in the compression member 14 of the bolster, the top of the boss terminating a suitable distance below the tension plate 13, said tension plate being provided with an aper- ,ture 19 aligned with the apertures in the boss 18, and of somewhat greater diameter for the purpose of admitting the head of the center pin hereinafter more fully described.

0n the under surface of the compression member 14, and centrally thereof, is arranged a center-bearing plate 20, having a recess 21 adapted for the reception of a central boss 22, forming a part of plate 23, which lits into a cup-shaped socket formed centrally in the truck bolster 150. The truck bolster Or spider 150 preferably has formed integrali therewith a center-bearing section 24 whic is provided with an upper central recess 25, and a lower central recess 26, said recesses being separated by means of a partition 27 in which is provided an elongated transversely disposed slot which affords communication between the chambers and 26.

The locking center pin is indicated broadly by the reference character B. The center pin includes a cylindrical body portion 29 of a diameter permitting of the insertion of the pin through the openings in the body. bolster, and into the recess 25, said pin being provided adjacent one end with a. reduced portion SO, and at its extremity with a cross head 31 of narrow elongated conformation, and of such size as to be adapted to.pass through the slot 28 in the partition 27 when the pin is being placed in operative condition, and enter the recess 26 in the bolster 150, and when rotated is disposed crosswise with respect to the slot 28 and cannot be removed past the partition 27, The opposite end of the pin is provided with a circular head 32' 0f greater diameter than the cylindrical body portion, said head being adapted to bear Ywith downwardly projecting vsitioned so as to against the top wall of the boss 18 as shown, there being any desired number of washers 33 interposed between the top of the boss 18 and the head 32 of the pin. The top surface of the head 32 is provided with a diametrically arranged rib 34, adapted to'cooperate with the means which prevent rotation of the pin when the same is in operative position.

Mounted upon the upper surface of the tension member' 13 is a bracket 35 having a vertically disposed central section 36 extending upwardly through the tioor 37 of the car, and preferably terminating flush with the upper surface thereof, said central section being provided with a central bore 38 ot somewhat greater diameter than the head 32 of the pin B. The upper portion of the central section 36 is provided with a square shoulder 39, adapted to accommodate a square shaped locking plate 40 which may be secured in position by fastening members, such as the screws shown in the drawings. The under surface ot' the locking plate LLO is provided spaced ribs l2-42, between which the rib 34 on the pin B is received, which eiiectually prevents rotation ot' the pin B when the same is in operative condition, and thereby loclis the truck bolster 150 to the body bolster.

In operation, when it is desired to remove the locking pin B, the locking plate Ll0 is rst disconnected and lifted vertically off of the square shoulder of the central section, after which the pin B is rotated about its aXis to position the cross head 31 so that the same may pass through the slot 28 in the truck bolster 150, the pin then being i'ree to be vertically removed from the center pin openings, and thereby freeing the truck :trom its connection with the body bolster. VhenV the truck is replaced atter removal, the center plate 2O is first placed in posit-ion with respect to the center bearing 23, alter which the desired number ot' washers may be slipped upon the pin B after which said pin may be dropped through the central section into the pin openings of the boss 18, and said pin popermit passage of the cross head 31 through the slot Q8, after which the pin is rotated to dispose the same crosswise with respect to said slot, after which the locking plate 40 is applied and secured, thereby disposing the ribs 4t2-42 at opposite sides of the rib 34 on the pin, preventing rotation oit' the pin, and locking the truck bolster to the body bolster, While permittingthe necessary pivotal movement between the parts.

I have herein shown and described what I now consider the preferred manner of carrying out the invention, but the same is merely illustrative and all changes and modtications are contemplated that'come within the scope ot the claims appended hereto.

I claim: y

1. In car construction, the combination with a body bolster and a truck element, said truck element including centrally disposed locking means permitting -the insertion of a locking member from the top of said element downwardly; of a locking member insertable through the body bolster from the Lipper portion and having means cooperating, when moved in one direction, with said locking means to eli'ect engagement therebetween and lock said body bolster and said truck element together for pivotal movement, and detachable means for preventing movement ot' said member to release the locking engagement thereof with the parts.

2. In car construction, including a licor; otl a body bolster arranged beneath said floor; said bodybolster being provided with kingpin openings; a truck member having kingpin openings adapted to register with the openings in said body bolster; a locking pin insertable through the floor of said car and the openings of said body bolster and truclr member; means associated with said body bolster and truck member and said pin whereby movement ot said parts in one direction eftects locking engagement between said bolster' and truck member, while movement in a reverse direction releases said pin to permit de- "tachment, and means accessible at a point above the iioor of said car for maintaining said pin in locking engagement or releasing t ie same for detachment.

3. In car construction, the combination with a body bolster and a truck member, having means for the reception of a center pin; abutments on said pin, said body bolster and said truck member, adapted to be brought into engagement by relative rotation between the parts to lock said body Vbolster and truck member together for pivotal movement; and detachable means, when in position, arranged to prevent relative 4rotation between the parts in a releasing direction, and when detached, freeing said pin for removal.

4. In car construction, the combination with a body bols ter and a truck member, having means for the reception of a center pin; abutment-s on said pin, said body bolster and said truck member adapted to be brought intoengagement by relative rotation between the parts to lock said body bolster and truck member together for pivotal movement; and detachable means, when in position, arranged to prevent relative rotation between the parts in a releasing direction, and when detached, freeing said pin for removal.

5. In car construction, the combinationy with a body bolster and a truck lbolster having center pin openings, and abutments arranged to cooperate with a center pin, one of said abutments having an elongated slot' therein; a center pin having a head adapted to engage the abutments of said body bolster, and the opposite end of said pin being provided with a reduced portion and a crosshead adapted to enter said slot, rotation of said pin disposing said crosshead crossWise of said slot to prevent removal of said pin.

6. In car construction, the combination with a body bolster and a truck bolster having center pin openings, and abutments arranged to cooperate With a center pin, one of said abutments having an elongated slot therein; a center pin having a head adapted to engage the abutments of said body bolster, and the opposite end of said pin being provided With a reduced portion and a crosshead adapted to enter said slot, rotation of said pin disposing said crosshead crossvvise of said slot to prevent removal of said pin; and detachable means accessible from the upper portion of said body bolster for locking saidpin, said means being detachable to permit removal of said pin. l

7. In a car construction, the combination with a body bolster provided with a centerpin opening; a truck element having a centerpin opening; a headed center-pin adapted to be disposed in the openings provided therefor; detachable means associated With the head oi the pin and said body bolster to prevent or permit rotation thereof as desired; and means associated with the opposite end portion of said pin and with said truck element, whereby rotation of said pin locks and unlocks said truck element With respect to said body bolster.

8. In a car construction, including a floor provided with an opening, the combination with center sills and a body bolster including a center-bearing casting provided With a centrally disposed boss having bearing openings therein, of a central section secured to the Vupper portion of said bolster in spaced relation with reference to said boss, said section extending through the opening in said floor and terminating flush with the upper surface of said floor, said central section being provided With a central bore and having an offset square shoulder adjacent its outer end; a truck member having center pin openings; a headed king pin disposed in the center opening, the head of said pin being arranged to bear against said boss, and the opposite end of said pin having means by which rotationof said pin eects an interlocking connection With said truck member; and a square plate detachably arranged upon said shoulder, said plate being provided With a projection adapted to engage a projection upon the head of said pin When in operative position to prevent rotation of said pin.

9. In a device of the character described, the combination With a body bolster element and a truck element, each of said elements having king pin openings and central abutments, the abutments of one of said elements being spaced apart laterally to provide a recess of less Width in one direction than the corresponding king pin opening; and a locking pin having abutments co-operating with the abutments of said elements, one of said abutments on said pin-being of such a size as to pass freely through said recess in one position of the pin and being engageable with the abutments defining said recess by rotation of the pin to lock the bolster element and truck element together.

10. In a device of the character described, the combination with a body element and a truck element, each of said elements having king pin openings and central abutments, the abutments of yone of said elements defining a recess of less Width in one direction than the corresponding king pin opening; a locking pin having abutments adapted to cooperate With the abutments of said elements, one of said abutments on said pin being of a size to pass freely through said recess in one position of the pin and being engageable With the corresponding abutment by rotation of said pin to lock the bolster element and truck element together and means located adjacent the entrance to the king pin openings, co-operating with the pin when in position to maintain its locking engagement, Aand When detached permitting removal of said pin from its locking position. j

In Witness that I claim the foregoing I have hereunto subscribed my name this 5th day of L May 1927.

JOHN MGMULLEN. 

